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http://www.nasa.gov/press-release/nasa-begins-work-to-build-a-quieter-supersonic-passenger-jet http://www.nasa.gov/press-release/nasa-begins-work-to-build-...

http://www.nasa.gov/press-release/nasa-begins-work-to-build-a-quieter-supersonic-passenger-jet http://www.nasa.gov/press-release/nasa-begins-work-to-build-... NASA is working on this - both the sound and the fuel use.

thearn4 10y ago
In fact, x-plane development is going to be funded by NASA Aeronautics for the production of a number of next-gen flight demonstrators, included a supersonic low-boom demonstrator. Truss-braced wing configuration, hybrid-electric and all-electric are among the other contenders.